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Structural and electrical properties of Ti doped α-Fe2O3

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2013
554.pdf (883.1Kb)
Authors
Nikolić, Maria Vesna
Sekulić, D. L.
Slankamenac, Miloš
Aleksić, Obrad S.
Danninger, H.
Halwax, E.
Pavlović, Vladimir B.
Nikolić, Pantelija M.
Article (Published version)
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Abstract
In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]
Keywords:
X-ray diffraction / electrical properties / scanning electron microscopy / Ti doping / α-Fe2O3
Source:
Science of Sintering, 2013, 45, 3, 281-292
Publisher:
  • Belgrade : International Institute for the Science of Sintering
Funding / projects:
  • Lithium-ion batteries and fuel cells - research and development (RS-45014)
  • Development of the methods, sensors and systems for monitoring quality of water, air and soil (RS-43008)
  • Development of the methods, sensors and systems for monitoring quality of water, air and soil (RS-43008)

DOI: 10.2298/SOS1303281N

ISSN: 0350-820X (Print); 1820-7413 (Online)

WoS: 000339449200005

Scopus: 2-s2.0-84893417241
[ Google Scholar ]
9
8
Handle
https://hdl.handle.net/21.15107/rcub_dais_557
URI
https://dais.sanu.ac.rs/123456789/557
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Sekulić, D. L.
AU  - Slankamenac, Miloš
AU  - Aleksić, Obrad S.
AU  - Danninger, H.
AU  - Halwax, E.
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Pantelija M.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/557
AB  - In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Structural and electrical properties of Ti doped α-Fe2O3
SP  - 281
EP  - 292
VL  - 45
IS  - 3
DO  - 10.2298/SOS1303281N
UR  - https://hdl.handle.net/21.15107/rcub_dais_557
ER  - 
@article{
author = "Nikolić, Maria Vesna and Sekulić, D. L. and Slankamenac, Miloš and Aleksić, Obrad S. and Danninger, H. and Halwax, E. and Pavlović, Vladimir B. and Nikolić, Pantelija M.",
year = "2013",
abstract = "In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Structural and electrical properties of Ti doped α-Fe2O3",
pages = "281-292",
volume = "45",
number = "3",
doi = "10.2298/SOS1303281N",
url = "https://hdl.handle.net/21.15107/rcub_dais_557"
}
Nikolić, M. V., Sekulić, D. L., Slankamenac, M., Aleksić, O. S., Danninger, H., Halwax, E., Pavlović, V. B.,& Nikolić, P. M.. (2013). Structural and electrical properties of Ti doped α-Fe2O3. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 45(3), 281-292.
https://doi.org/10.2298/SOS1303281N
https://hdl.handle.net/21.15107/rcub_dais_557
Nikolić MV, Sekulić DL, Slankamenac M, Aleksić OS, Danninger H, Halwax E, Pavlović VB, Nikolić PM. Structural and electrical properties of Ti doped α-Fe2O3. in Science of Sintering. 2013;45(3):281-292.
doi:10.2298/SOS1303281N
https://hdl.handle.net/21.15107/rcub_dais_557 .
Nikolić, Maria Vesna, Sekulić, D. L., Slankamenac, Miloš, Aleksić, Obrad S., Danninger, H., Halwax, E., Pavlović, Vladimir B., Nikolić, Pantelija M., "Structural and electrical properties of Ti doped α-Fe2O3" in Science of Sintering, 45, no. 3 (2013):281-292,
https://doi.org/10.2298/SOS1303281N .,
https://hdl.handle.net/21.15107/rcub_dais_557 .

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